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RM2040   Roweite with Johnbaumite and andradite

Shijiangshan mine, Linxi, Linxi Co., Ulanhad League, Inner Mongolia, China

Fan-shaped aggregates of excellent roweite crystals, beige orange colour, defined, good size and with quality for this species. Roweite is a rare calcium and manganese borate. They are accompanied by white hexagonal prismatic crystals of johnbaumite, up to 7 mm, excellent for the species. Johnbaumite is a very rare calcium arsenate, the arsenic analog of hydroxylapatite. In a matrix with green andradite and transparent colorless pentahydroborite. A very complete specimen, with very rare and well crystallized species.


Size: 5.5 x 4.5 x 3.7 cm.
Main crystal: 1.5 cm (Roweite)/ 7 mm (Johnbaumite)
Found in 2017.

Fluorescent under short wave UV
 
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